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| author | H.J. Lu <hjl.tools@gmail.com> | 2021-04-19 10:45:07 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2021-04-19 11:01:45 -0700 |
| commit | 83c5b368226c34a2f0a5287df40fc290b2b34359 (patch) | |
| tree | 4cb4e20823f86319d0f3197396c984b4efce0fe8 /sysdeps/x86_64/multiarch | |
| parent | 55bf411b451c13f0fb7ff3d3bf9a820020b45df1 (diff) | |
| download | glibc-83c5b368226c34a2f0a5287df40fc290b2b34359.tar.gz glibc-83c5b368226c34a2f0a5287df40fc290b2b34359.tar.xz glibc-83c5b368226c34a2f0a5287df40fc290b2b34359.zip | |
x86-64: Require BMI2 for strchr-avx2.S
Since strchr-avx2.S updated by
commit 1f745ecc2109890886b161d4791e1406fdfc29b8
Author: noah <goldstein.w.n@gmail.com>
Date: Wed Feb 3 00:38:59 2021 -0500
x86-64: Refactor and improve performance of strchr-avx2.S
uses sarx:
c4 e2 72 f7 c0 sarx %ecx,%eax,%eax
for strchr-avx2 family functions, require BMI2 in ifunc-impl-list.c and
ifunc-avx2.h.
Diffstat (limited to 'sysdeps/x86_64/multiarch')
| -rw-r--r-- | sysdeps/x86_64/multiarch/ifunc-avx2.h | 4 | ||||
| -rw-r--r-- | sysdeps/x86_64/multiarch/ifunc-impl-list.c | 12 |
2 files changed, 11 insertions, 5 deletions
diff --git a/sysdeps/x86_64/multiarch/ifunc-avx2.h b/sysdeps/x86_64/multiarch/ifunc-avx2.h index e3ec62ca5e..6de72f7272 100644 --- a/sysdeps/x86_64/multiarch/ifunc-avx2.h +++ b/sysdeps/x86_64/multiarch/ifunc-avx2.h @@ -30,11 +30,11 @@ IFUNC_SELECTOR (void) const struct cpu_features* cpu_features = __get_cpu_features (); if (CPU_FEATURE_USABLE_P (cpu_features, AVX2) + && CPU_FEATURE_USABLE_P (cpu_features, BMI2) && CPU_FEATURES_ARCH_P (cpu_features, AVX_Fast_Unaligned_Load)) { if (CPU_FEATURE_USABLE_P (cpu_features, AVX512VL) - && CPU_FEATURE_USABLE_P (cpu_features, AVX512BW) - && CPU_FEATURE_USABLE_P (cpu_features, BMI2)) + && CPU_FEATURE_USABLE_P (cpu_features, AVX512BW)) return OPTIMIZE (evex); if (CPU_FEATURE_USABLE_P (cpu_features, RTM)) diff --git a/sysdeps/x86_64/multiarch/ifunc-impl-list.c b/sysdeps/x86_64/multiarch/ifunc-impl-list.c index f1a755b1d6..0b0927b124 100644 --- a/sysdeps/x86_64/multiarch/ifunc-impl-list.c +++ b/sysdeps/x86_64/multiarch/ifunc-impl-list.c @@ -396,10 +396,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array, /* Support sysdeps/x86_64/multiarch/strchr.c. */ IFUNC_IMPL (i, name, strchr, IFUNC_IMPL_ADD (array, i, strchr, - CPU_FEATURE_USABLE (AVX2), + (CPU_FEATURE_USABLE (AVX2) + && CPU_FEATURE_USABLE (BMI2)), __strchr_avx2) IFUNC_IMPL_ADD (array, i, strchr, (CPU_FEATURE_USABLE (AVX2) + && CPU_FEATURE_USABLE (BMI2) && CPU_FEATURE_USABLE (RTM)), __strchr_avx2_rtm) IFUNC_IMPL_ADD (array, i, strchr, @@ -413,10 +415,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array, /* Support sysdeps/x86_64/multiarch/strchrnul.c. */ IFUNC_IMPL (i, name, strchrnul, IFUNC_IMPL_ADD (array, i, strchrnul, - CPU_FEATURE_USABLE (AVX2), + (CPU_FEATURE_USABLE (AVX2) + && CPU_FEATURE_USABLE (BMI2)), __strchrnul_avx2) IFUNC_IMPL_ADD (array, i, strchrnul, (CPU_FEATURE_USABLE (AVX2) + && CPU_FEATURE_USABLE (BMI2) && CPU_FEATURE_USABLE (RTM)), __strchrnul_avx2_rtm) IFUNC_IMPL_ADD (array, i, strchrnul, @@ -570,10 +574,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array, /* Support sysdeps/x86_64/multiarch/wcschr.c. */ IFUNC_IMPL (i, name, wcschr, IFUNC_IMPL_ADD (array, i, wcschr, - CPU_FEATURE_USABLE (AVX2), + (CPU_FEATURE_USABLE (AVX2) + && CPU_FEATURE_USABLE (BMI2)), __wcschr_avx2) IFUNC_IMPL_ADD (array, i, wcschr, (CPU_FEATURE_USABLE (AVX2) + && CPU_FEATURE_USABLE (BMI2) && CPU_FEATURE_USABLE (RTM)), __wcschr_avx2_rtm) IFUNC_IMPL_ADD (array, i, wcschr, |